Page 1 of 5 1. DESCRIPTION The Viking VK3021 Quick Response Pendent Sprinkler is a small thermosensitive glass bulb spray sprinkler available with various finishes and temperature ratings to meet design requirements. The special Polyester and Electroless Nickel PTFE (ENT) coatings can be used in decorative applications where colors are desired. In addition, these coatings have been investigated for installation in corrosive environments and are Listed and Approved as indicated in the Approval Chart. 2. LISTINGS AND APPROVALS UL Listed: Category VNIV FM Approved: Classes 2017, 2015, 2043 Refer to the Approval Chart and Design Criteria for requirements that must be followed. 3. Specifications: Minimum Operating Pressure: 7 psi (0.5 bar) Rated to: 175 psi (12 bar) water working pressure. Factory tested hydrostatically to 500 psi (34.5 bar). Thread size: 1/2 NPT (15 mm BSP) Nominal K-factor: 5.6 U.S. (80.6 metric*) Glass-bulb fluid temperature rated to -65 F (-55 C) * Metric K-factor measurement shown is in Bar. When pressure is measured in kpa, divide the metric K-factor shown by 10.0. Material Standards: Sprinkler Body: Brass CW602N, UNS-C84400 or QM Brass Deflector: Stainless Steel UNS S30400 Pip Cap Shell - Stainless Steel UNS-S44400 Pip Cap Disc - Stainless Steel UNS-S30100 Belleville Spring - Nickel Alloy Pip Cap Seal - Polytetrafluoroethylene (PTFE) Compression Screw: Brass CW612N, CW508L, UNS-C36000 or UNS-C26000 Shipping Cap: Polyethylene Bulb: Glass, nominal 3 mm diameter Finishes and Temperatures: Finish Brass Chrome White Polyester Black Polyester ENT -- Suffix A F M-/W M-/B JN -- Temperature 135 F (57 C) 155 F (68 C) 175 F (79 C) 200 F (93 C) 286 F (141 C) Open Suffix A B D E G Z Ordering Information: (Refer to Table 1 and the current Viking List Price Book.) 4. INSTALLATION Refer to appropriate NFPA, FM Global, and/or any other applicable installation standards. 5. OPERATION During fire conditions, when the temperature around the sprinkler reaches its operating temperature, the heat-sensitive liquid in the glass bulb expands, causing the bulb to shatter, releasing the pip cap assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to extinguish or control the fire. 6. INSPECTIONS, TESTS AND MAINTENANCE Refer to NFPA 25 for Inspection, Testing and Maintenance requirements. 7. AVAILABILITY Viking Sprinkler Model VK3021 is available through a network of domestic and international distributors. See The Viking Corporation web site for the closest distributor or contact The Viking Corporation. 8. GUARANTEE For details of warranty, refer to Viking s current list price schedule or contact Viking directly. New page.
Page 2 of 5 TABLE 1: ORDERING INFORMATION Instructions: Using the sprinkler base part number, (1) add the suffix for the desired Finish (2) add the suffix for the desired Temperature Rating. Sprinkler Base Part No. NPT Inch Size 1: Finishes 2: Temperature Ratings BSP mm Description Suffix 1 Nominal Rating Bulb Color Max. Ambient Ceiling Temperature 3 Suffix 19917 1/2 -- Brass A 135 F (57 C) Orange 100 F (38 C) A 19929 -- 15 Chrome F 155 F (68 C) Red 100 F (38 C) B White Polyester 4,6 M-/W 175 F (79 C) Yellow 150 F (65 C) D Black Polyester 4,6 M-/B 200 F (93 C) Green 150 F (65 C) E ENT 4,5,6 JN 286 F (141 C) Blue 225 F (107 C) G Open -- -- Z Example: 19917MB/W = VK3021 with White Polyester Finish and 155 F (68 C) Nominal temperature rating. This sprinkler is to be installed into an area with a maximum ambient temperature of 100 F (38 C) meaning if the area will experience temperatures above the maximum ambient rating, you shall use a higher temperature-rated sprinkler. Accessories Sprinkler Wrenches (see Figure 1): A. Installer Wrench: Part No. 22055 (available since 2017). B. Cabinet Wrench: Part No. 20901M/B (available since 2017). C. Recessed Socket Wrench: Part No. 20951M/B 2 (available since 2017). Sprinkler Cabinet: A. Up to 6 sprinklers: Part number 01724A (available since 1971). B. 6-12 Sprinklers: Part number 01725A (available since 1971). Footnotes 1. Where a dash (-) is shown in the Finish suffix designation, insert the desired Temperature Rating suffix. See example above. 2. Requires a 1/2 ratchet which is not available from Viking. 3. Based on NFPA 13, NFPA 13R, and NFPA 13D. Other limits may apply, depending on fire loading, sprinkler location, and other requirements of the Authority Having Jurisdiction. Refer to specific installation standards. 4. UL Listed as corrosion resistant. 5. FM Approved as a corrosion proofing coating for installation in corrosive environments. 6. The corrosion resistant and corrosion proofing coatings have passed the standard corrosion test required by the approving agencies indicated in the Approval Chart. These tests cannot and do not represent all possible corrosive environments. Prior to installation, verify through the end-user that the coatings are compatible with or suitable for the proposed environment. For automatic sprinklers, the ENT coating is applied to all exposed exterior surfaces, including the waterway. A B C 7/16 (11 mm) Nominal Pipe Engagement 1/2 NPT 15 mm BSP 1-15/16 (49 mm) Figure 1: Sprinkler Wrenches Figure 2: Sprinkler Dimensions
Page 3 of 5 APPROVAL CHART Viking Quick Response Pendent Sprinkler VK3021 K5.6 (80.6 metric) Maximum 175 PSI (12 Bar) WWP Thread Size Listings and Sprinkler Base Approvals2 Part Number 1 NPT BSP UL Inch mm 19917 1/2 -- A1, B2X, B3Y A1, B2X, B3Y 19929 -- 15 A1, B2X, B3Y A1, B2X, B3Y Approved Temperature Rating Code: A = 135 F (57 C), 155 F (68 C), 175 F (79 C), 200 F (93 C), and 286 F (141 C) B = 135 F (57 C), 155 F (68 C), 175 F (79 C), and 200 F (93 C) Approved Finish Code: 1 = Brass, Chrome, White Polyester 3,4, Black Polyester 3,4, and ENT 4,5 2 = Brass, Chrome, White Polyester 3,4, and Black Polyester 3,4 3 = ENT 4,5 Approved Escutcheon Code: X = Installed with Viking Recessed Escutcheons Models NP-1, NP-2, and NP-3, Viking Adjustable Escutcheon Model NP-4, or Viking Standard Surface Mounted Escutcheons Y = Installed with Viking Model NP-1 Recessed Escutcheon OR Standard Surface Mounted Escutcheons Footnotes 1 Base Part number is shown. For complete part number, refer to Viking s current price schedule. 2 This table shows the listings and approvals available at the time of printing. Check with the manufacturer for any additional approvals. 3 Other colors are available upon request with the same Listings and Approvals as the standard colors. 4 culus Listed as corrosion resistant. 5 FM Approved as corrosion proofing for corrosive environments. DESIGN CRITERIA - UL culus Listing Requirements: The Viking VK3021 Quick Response Pendent Sprinkler is culus Listed as indicated in Approval Chart for installation in accordance with the latest edition of NFPA 13 for standard spray sprinklers. Designed for use in Light and Ordinary occupancies. The sprinkler installation rules contained in NFPA 13 for standard spray Pendent sprinklers shall be followed. IMPORTANT: Always refer to Form No. F_091699 - Care and Handling of Sprinklers. Also refer to Form No. F_080614 for general care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest edition of Viking Technical Data, the appropriate standards of NFPA, LPCB, APSAD, VdS or other similar organizations, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable. DESIGN CRITERIA - FM FM Approval Requirements: The Viking VK3021 Quick Response Pendent Sprinkler is FM Approved as standard response Non-Storage Pendent sprinkler as indicated in the FM Approval Guide. For specific application and installation requirements, reference the latest applicable FM Loss Prevention Data Sheets (including Data Sheet 2-0). FM Global Loss Prevention Data Sheets contain guidelines relating to, but not limited to: minimum water supply requirements, hydraulic design, ceiling slope and obstructions, minimum and maximum allowable spacing, and deflector distance below the ceiling. NOTE: The FM Installation guidelines may differ from UL and/or NFPA criteria. IMPORTANT: Always refer to Form No. F_091699 - Care and Handling of Sprinklers. Also refer to Form No. F_080614 for general care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest edition of Viking Technical Data, the appropriate standards of NFPA, LPCB, APSAD, VdS or other similar organizations, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable. FM
Page 4 of 5 1. Install the escutcheon inner ring onto the sprinkler threads. 2. Carefully slide the wrench** sideways around the protective cap then push upwards to engage with the sprinkler wrench flats. 3. Install the sprinkler and escutcheon assembly into the pipe fitting. Be sure the escutcheon outer ring contacts the surface of the finished ceiling. Figure 3: Recessed Installation (with Recessed Socket Wrench) **A 1/2 ratchet is required (not available from Viking). 1. Install the escutcheon inner ring onto the sprinkler threads. 2. Carefully slide the wrench sideways around the protective cap then push upwards to engage with the sprinkler wrench flats. 3. Install the sprinkler and escutcheon assembly into the pipe fitting. Be sure the escutcheon outer ring contacts the surface of the finished ceiling. Figure 4: Recessed Installation (with standard Installer s Wrench)
Page 5 of 5 Ceiling opening size: Minimum: 2-5/16 (59 mm) Maximum: 2-1/2 (64 mm) Min. 13/16 (21 mm) Max. 1-7/16 (37 mm) Min. 15/16 (24 mm) Max. 1-3/4 (44 mm) Model NP-1 Recessed Escutcheon Model NP-2 or NP-3 Thread-On Recessed Escutcheon (NP-3 Outer ring has a larger diameter) Ceiling opening size: Minimum: 2-5/16 (59 mm) Maximum: 2-1/2 (64 mm) Min. 1-3/16 (30 mm) 1-7/16 (37 mm) Max. 1-11/16 (43 mm) Model NP-4 Adjustable Escutcheon Standard Surface-Mounted Escutcheon Figure 5: Installation Dimensions with Viking Escutcheons Form No. F_020616 18.05.03 Rev 18.1